Shaky stereoscopic video is not only unpleasant to watch
but may also cause 3D fatigue. Stabilizing the left and right
view of a stereoscopic video separately using a monocular
stabilization method tends to both introduce undesirable
vertical disparities and damage horizontal disparities,
which may destroy the stereoscopic viewing experience. In
this paper, we present a joint subspace stabilization method
for stereoscopic video. We prove that the low-rank subspace
constraint for monocular video [10] also holds for stereoscopic
video. Particularly, the feature trajectories from the
left and right video share the same subspace. Based on this
proof, we develop a stereo subspace stabilization method
that jointly computes a common subspace from the left and
right video and uses it to stabilize the two videos simultaneously.
Our method meets the stereoscopic constraints without
3D reconstruction or explicit left-right correspondence.
We test our method on a variety of stereoscopic videos with
different scene content and camera motion. The experiments
show that our method achieves high-quality stabilization
for stereoscopic video in a robust and efficient way.

AcknowledgmentThe video "It's a Small World" is used from Youtube user lelandv1969 under
a Creative Commons license. This work was supported in part by NSF grants
IIS-1321119, CNS-1218589, and CNS-1205746. This video was narrated by
Will Landecker.